53 research outputs found
Catalysis Research of Relevance to Carbon Management: Progress, Challenges, and Opportunities
Full text linkX-ray Powder Diffraction Study of Organometallic Polymers: [Ru(L)(CO)2]n (L = 2,2\u2019-Bipyridine or 1,10 Phenanthroline)
No full textA combination of rather unconventional XRPD methods has been used to assess the polymeric nature of the [Ru(L)(CO)(2)](n) (L = 2,2'-bipyridine, 4,4'-dimethyl-2,2'-bipyridine, and 1,10-phenanthroline) derivatives. The polymeric chains pack pseudohexagonally in the ab plane and grow along c with Ru-Ru distances close to 3.0 Angstrom. The very poor diffraction patterns of these electrogenerated polymers suggest that the flat Ru(L)(CO)(2) monomers are staggered by 45degrees or 135degrees rotations (as in [Ru(CO)(4)](n)) but stack in random sequence along the chains
Novel Complexes trans(Cl)-[Os(bpy)(CO)(CH3CN)Cl2]n (n = 0, +1; bpy = 2,2′-Bipyridine): Photo- and Electrochemical Syntheses and Comparative Study of Their Bonding and Redox Properties
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Bonding and Redox Properties of trans(Cl)-[Os(bpy)(CO)(CH3CN)Cl2]n (n = 0, +1); bpy = 2,2'-bipyridine) Produced by Photoexcitation or Electrochemical Oxidation of Its Dicarbonyl Precursor
No full textElectrosynthesis, physico-chemical and electrocatalytic properties of a novel electroactive Ru(0) material based on the (Ru(terpy)(CO)) frame (terpy=2,2′:6′,2′′-terpyridine)
No full textInternational audienceThe preparation of an electroactive material based on a (Ru(terpy)(CO)) frame (terpy/2,2?:6?,2??-terpyridine) has been achievedby the two electron reduction of trans- or cis-[Ru(terpy)(CO)Cl2] complexes. During this electrochemical process, two chlorideligands are released and metal/metal bonds are formed. The highly coloured resulting compound containing Ru/Ru bonds caneither be coated as a film on an electrode surface in acetonitrile electrolyte or generated as a soluble product in DMSO electrolyte.The nature of this material does not depend on the stereochemistry of the starting complex and its characterization, either as a solidand in solution, has been investigated by an interplay between electroanalytical and spectroscopic techniques including 1H-NMR,UV/vis, MS and IR. It appears from the data that one of the possible structure of the material is an oligomeric [Ru(terpy)(CO)]nwith n/3. The trans- and cis-[Ru(terpy)(CO)Cl2] complexes and the related organometallic metal/metal based material displaycatalytic activity in the electroreduction of carbon dioxide in hydro-organic media. Interestingly, [Ru(terpy)(CO)]n modifiedelectrodes also display electrocatalytic activity in purely aqueous solutions
Redox-Active Polymers Based on Nonbridged Metal-Metal Bonds. Electrochemical Formation of [Os(bpy)(CO)(L)]n (bpy = 2,2'-bipyridine; L = CO, MeCN) and of Their Reduced Forms: A Spectroelectrochemical Study
No full textBonding and Redox Properties of trans(Cl)-[Os(bpy)(CO)(CH3CN)Cl2]n (n = 0, +1); bpy = 2,2'-bipyridine) Produced by Photoexcitation or Electrochemical Oxidation of Its Dicarbonyl Precursor
No full textAn organometallic polymer of osmium(0). Its electrosynthesis and electrocatalytic properties towards CO2 reduction.
No full textAn organometallic polymer of osmium(0). Its electrosynthesis and electrocatalytic properties towards CO2 reduction.
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